I'd like to go back to wonder-building.
There are a several threads where people discuss which are the most important and feasible, usually grouped by difficulty level. As a recent example, see:
Wonders that can be relatively easy to build on higher difficulties?
Yes all of them but some are a lot harder to see like sistine and notre dame.
Are you talking about the vision you get just from an embassy? If so, I need to look closer!